New Physics v1.12.1

All in all, this version includes physics: - Changed physics.sii (there are two versions - with a softer and more rigid cabin); - Changed the position of the locator (balance chamber) CABIN [] default for all tracks (in truck.pmg); - Changed residual_travel [] default for all tracks (in defah chassis); - Changed kerb_weights [] default for all tracks (in defah chassis).